Modify trivial inline functions.

Replace ns_put16(), ns_put32(), ns_get16(), ns_get32
functions by htons(), htonl(), ntohs(), ntohl()

Bug: 129515023
Test: built, flashed, booted
Test: system/netd/tests/runtests.sh pass
      atest CtsNativeNetDnsTestCases
      atest DnsResolverTest
Change-Id: I08d127627456139832c14ebf2fc48a918d8e2ddf